Replace `pyvenv.cfg`'s `home` key with `base-prefix` and `base-exec-prefix`

Feature or enhancement

Proposal:

The home key in pyvenv.cfg is used to specify the directory where the base Python executable is. During the Path Initialization, this directory, and consecutively its parents, is searched for stdlib landmarks to determine sys.base_prefix and sys.base_exec_prefix. Naturally, this isn't ideal, it would be better if pyvenv.cfg contained these values directly.

Proposed plan:

• Update venv to start setting the base-prefix and base-exec-prefix keys in pyvenv.cfg when creating/updating environments
• In getpath, use the base-prefix and base-exec-prefix keys to set the prefixes
• Deprecate specifying home, in pyvenv.cfg

Has this already been discussed elsewhere?

No response given

Links to previous discussion of this feature:

No response

Inizia leggendo la logica di creazione e aggiornamento dell’ambiente venv, quindi segui la Path Initialization in getpath per vedere come pyvenv.cfg determina attualmente sys.base_prefix e sys.base_exec_prefix. Definisci come vengono scritte e utilizzate le nuove chiavi base-prefix e base-exec-prefix, come viene deprecata home e verifica sia gli ambienti appena creati sia quelli aggiornati.